Patent number: 4686102
Abstract: A multivalent pneumococcal vaccine consisting of immunogenic amounts of purified pneumococcal capsular polysaccharide (substantially absent "C" polysaccharide) of pneumococcal types (Danish designation) 1, 2, 3, 4, 5, 6B, 7F, 8, 9N, 9V, 10A, 11A, 12F, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F and 33F, and from none to one or both of 6A and 25, and combinations thereof and methods of purifying pneumococcal capsular polysaccharide types 3, 5, 9V, 10A, 11A, 15B, 17F, 19A, 22F and 33F.
Type:
Grant
Filed:
April 12, 1984
Date of Patent:
August 11, 1987
Assignee:
American Cyanamid Company
Inventors:
Mary B. Ritchey, Francis R. Cano, Gerald J. O'Hara, James D. English, Wenlii Lin